Shuttle-motion for looms.



No. 7|s,s79.- Patanted Doc. 23, I902.

A. CHEVRETTE.

SHUTTLE MOTION FOR LOOMS.

(Application fil ed Dec. '7. 1901A (No Model.)

gvwewtoz f atten TATES ATENT OrFiCE.

ALEXANDER CHEVRETTE, OF \VOONSOCKET, RHODE ISLAND, ASSIGNOR TO HENRY S.THIBODEAU, OF WOONSOOKET, RHODE ISLAND.

SHUTTLE-MOTION FOR LOOIVIS.

SPECIFICATION forming part of Letters Patent No. 716,379, dated December23, 1902. Application filed December 7, 1901. Serial No. 85,025. (Nomodel.)

To all whom. it may concern:

Be it known that I, ALEXANDER CHEV- RETTE, a citizen of the UnitedStates, residing at \Voonsocket, in the county of Provideuce and Stateof Rhode Island, have invented new and useful ImprovementsinShuttle-Motions for Looms, of which the following is a specification.

My invention relates to looms, more espe- IO cially drop-box looms forfancy weaving, and has for its general object to provide improved meansfor returning the picker-staff to the heel of the lay subsequent to thethrow of the shuttle and holding it in such position and I5 againstrebound.

With the foregoing in mind the invention will be fully understood fromthe following description and claims when taken in conjunction with theaccompanying drawings, in

which- Figure 1 is a view of so much of a drop-box loom as is necessaryto illustrate my improvements; Fig. 2, a horizontal section taken in theplane of line 2 2 of Fig. 1; Fig. 3, an enlarged transverse sectiontaken in the plane of line 3 3 of Fig. 2, and Fig. 4 an enlarged detailsection taken in the plane of line 4 l of Fig. 2.

Similar letters of reference designate corresponding parts in all of theseveral views of the drawings, referring to which A is a portion of themain frame of an ordinarydrop-box loom; B, the picker-staff; O, theusual lug-strap connected to the pickerstaff; D, agirth forming part oftheframe, and

E a bracket-arm which constitutes the preferred support of myimprovements and is clamped or otherwise fixed on the girth and disposedat right angles thereto. The pickerstaff is fulcru med at a on a bracket1), fixed on one end of a rock-shaft Z), which shaft is journaled in abearing 5 on the frame and has fixed to its opposite end the lay-arm 6This manner of mounting the picker-staff enables the same to conform tothe movement of the lay. I desire it understood, however, that thepicker-staff may be mounted in any other manner that will permit it toconform to the movement of the lay without departing from the scope ofmy invention.

Arranged on and connected to the support or arm E, preferably in apivoted manner, as shown in Figs. 3 and l, is a spring-holder F,preferablya case cylindrical in form, in which is contained a coiledspring G. This spring is interposed between the forward end wall 0 ofthe case or any other suitable abutment thereof and an abutment orenlargement d on a movable device, such as a rod H, and the said rodextends loosely through an aperture e in the wall 0 and is connected byaleather strapf or other suitable means to the lower arm of thepicker-staff. By virtue of this construction it will be observed thatincident to the rocking of the picker-staff to throw the shuttle thespring G will be compressed and in consequence will operate immediatelysubseqent to such throw to promptly and positively return thepicker-staff to the heel of the lay and hold it against rebound in suchposition where it will be out of the way of and permit free movement ofthe drop-boxes. The spring arranged to be compressed incident to thethrow of the shuttle and adapted to expand immediately subsequent tosuch throw and return the picker-statf to its initial position againstthe heel of the lay is advantageous in that its tension is uniform andit is easy on the strapf and the picker-motion. The arrangement of saidspring in the case E removes the liability of it gathering lint andprecludes its being entangled or caught in other parts of the loom, andthe pivoted connection of the case to the support in such manner as toenable the case to swing horizontally enables the spring to accommodateitself to and keep in line with the sway of the lay. These will beappreciated as important advantages when it is remembered that the longstretching spring ordinarily hung'under a loom for the purpose ofreturning the picker-staff to its initial position loses its elasticityafter a short period of use and with every movement of the lay swingsaround on the floor under the loom, gathers lint, &c., andfrequentlybecomes entangled with other parts of the loom.

I have entered into a detailed description of the construction andrelative arrangement of parts embraced in the present and preferredembodiment of my invention in order to impart a full, clear, and exactunderstanding of the same. I do not desire, however,

to be understood as confining myself to such specific construction andarrangement of parts, as such changes or modifications may be made inpractice as fairly fall within the scope of my invention.

Having described my invention, what I claim, and desire to secure byLetters Patent,

1. The combination with the picker-staff of a loom; of a rod connectedand movable with the picker-staff, a suitable support, a spring engagingthe movable rod, and a springholder; said holder being movably mountedon the support whereby it and the spring are enabled to accommodatethemselves to the movements of the lay of the loom.

2. The combination with the picker-staff of a loom; of a rod connectedand movable with the picker-staif, and having an abutment, a suitablesupport, a spring-holder movably mounted on the support and having anabutment, and a spring carried by the holder and interposed between theabutment of the rod and the abutment of the spring-holder; the latterabutment being located between the abutment of the rod and thepicker-staff.

3. The combination with the picker-stafi of a loom; of a rodconnectedand movable with the picker-stafi, a suitable support, a case movablymounted on said support, and a spring contained in the case and engagingthe said movable rod.

4:. The combination with the picker-staff of a loom; of a rod connectedand movable with the picker-staff, and having an abutment, a support, acase movably mounted on the support and receiving the movable rod, saidcase also having an abutment and a spring contained in the case andinterposed between the abutment of the movable rod and the abutment ofthe case.

5. The combination with the picker-staff of a loom; of a rod having anabutment, a flexible connection between said rod and the staff, asuitable support, a case pivotally mounted on the support and receivingthe rod, said case having an abutment, and a coiled spring surroundingthe rod Within the case and in-.

terposed between the abutment on the rod and the abutment of the case.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

ALEXANDER OHEVBETTE.

